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// Copyright (c) Microsoft Corporation. All rights reserved. See License.txt in the project root for license information.
using System.IO;
using System.Net.Http.Headers;
namespace System.Net.Http
{
/// <summary>
/// Provides a <see cref="IMultipartStreamProvider"/> implementation that returns a <see cref="MemoryStream"/> instance.
/// This facilitates deserialization or other manipulation of the contents in memory.
/// </summary>
internal class MultipartMemoryStreamProvider : IMultipartStreamProvider
{
private static MultipartMemoryStreamProvider instance = new MultipartMemoryStreamProvider();
private MultipartMemoryStreamProvider()
{
}
/// <summary>
/// Gets a static instance of the <see cref="MultipartMemoryStreamProvider"/>
/// </summary>
public static MultipartMemoryStreamProvider Instance
{
get { return MultipartMemoryStreamProvider.instance; }
}
/// <summary>
/// This <see cref="IMultipartStreamProvider"/> implementation returns a <see cref="MemoryStream"/> instance.
/// This facilitates deserialization or other manipulation of the contents in memory.
/// </summary>
/// <param name="headers">The header fields describing the body parts content. Looking for header fields such as
/// Content-Type and Content-Disposition can help provide the appropriate stream. In addition to using the information
/// in the provided header fields, it is also possible to add new header fields or modify existing header fields. This can
/// be useful to get around situations where the Content-type may say <b>application/octet-stream</b> but based on
/// analyzing the <b>Content-Disposition</b> header field it is found that the content in fact is <b>application/json</b>, for example.</param>
/// <returns>A stream instance where the contents of a body part will be written to.</returns>
public Stream GetStream(HttpContentHeaders headers)
{
if (headers == null)
{
throw new ArgumentNullException("headers");
}
return new MemoryStream();
}
}
}
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